About the grades…Restaurants are given grades of A for scoring at least 90, B for 80 to 89 and C for 70 to 79. The state revokes permits for restaurants that score below 70. Restaurants are no longer eligible for two bonus points if an employee has completed a food service sanitation program within three years. Find more details on Union County restaurants at the health department’s website, union.digitalhealthdepartment.com.